EO.Wpf RadioButton offers the same functionalities as WPF standard RadioButton control, but also offers the ability to switch skins/themes programmatically. the following code switches the RadioButton to classic skin:

<!--A RadioButton that uses the "Classic" skin. Note this does
not affect any other controls -->
<eo:RadioButton eo:ThemeManager.SkinName="Classic">Hello</eo:RadioButton>

See here for more information on how to use skin and theme features.